Hi,
I agree with you Dan,
I'm a Linux/Solaris admin for several years now and this las weekend I was
working on large migration on a telco, it is the production machine for
billing, traffic analysis and so on. I'm talking about a machine with 64
processors and 128 GB RAM. If you want you may see more about this in
http://www.linux-geex.com/?p=47 (although the theme is not the migration
itself).
I'm also a fan of ZFS... better saying I was a fan of ZFS.
ZFS performs very poorly in comparison to VeritasFS (didn't compare with UFS
because they are too distinct), database writing was lousy, although we had
gains in reading, that was to be expected, the system gained a new faster
storage, double RAM and double processors, so if it wasn't faster it would
be a disaster.
I had already used backuppc with ZFS in a 3 TB pool and it wasn't faster
either, but as I was using FS compression I thought it was coming from
there.
Right now SUN support is working on ZFS on the server I was writing about
but on the table all options are open now including getting back the whole
production system to Veritas.
Another thing is that ZFS is taking the kernel processor usage (at some
points not all the time) over 50-60% and this for a minute or two and that
is not good at all. About the RAM usage, ZFS is limited to 20 GB ram so it
doesn't spread around the different boards (this could be bad in case of
hardware failure) and even with 20GB available only to FS... it's using it
all.
To be sincere I was a bit disappointed, I've been using ZFS on several
smaller servers, but after this I'm not that happy.
I'm hoping SUN can help us out with this one, patching is on the way lets
hope it works.
I don't recommend you to migrate your servers right away to ZFS, as I've
seen it may work very well, but it can also be miserable.
Cheers,
Pedro
On Tue, Jul 14, 2009 at 3:27 AM, dan <[email protected]> wrote:
> you win this one Carl! Yes, thats what I meant. It would be more accurate
> to say that nexenta is the only *solaris OS that has an installation package
> available AND that is installable out of the box. All the others require
> some luv to get backuppc going on because of dependancies.
>
> FreeBSD is pretty easy to install backuppc on but ZFS is not in a stable
> state there so no really good reason to go with that over a linux.
>
>
> On Mon, Jul 13, 2009 at 6:11 AM, Carl Wilhelm Soderstrom <
> [email protected]> wrote:
>
>> On 07/10 06:15 , dan wrote:
>> > The ONLY distribution that has backuppc available in the repos (bpc3.0)
>>
>> You mean the only opensolaris distro that has backuppc packaged?
>>
>> There's plenty of Linux packages out there. :)
>>
>> --
>> Carl Soderstrom
>> Systems Administrator
>> Real-Time Enterprises
>> www.real-time.com
>>
>>
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